[foreign-memaccess+abi] Integrated: Add benchmark

[Per Minborg]

On Fri, 16 Dec 2022 12:35:23 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> This PR proposed to add a new benchmark outlining potential performance gains with the FFM API in internal JDK classes.

This pull request has now been integrated.

Changeset: aed12210
Author:    Per Minborg <pminborg at openjdk.org>
URL:       https://git.openjdk.org/panama-foreign/commit/aed122101d73b0acac25b70a325bf0615d8f7153
Stats:     142 lines in 1 file changed: 142 ins; 0 del; 0 mod

Add benchmark

Reviewed-by: mcimadamore

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PR: https://git.openjdk.org/panama-foreign/pull/761